Integrating Changelly API


I’m stuck with my app on trying to integrate Changelly API into my app. I am stuck with an error message anytime I try to run it. Here is the documentation for the API and I’ve included screenshots of the affected blocks below. Any help would be greatly appreciated! Please let me know if you need more info!

Which error gives it

{“code”:-32600,“message”:“Invalid request”,“isExpected”:false}